The silence of the library _____ only by the sound of pages being turned over

You’ve switched the machine off. I told you not to,_____?

Do you know what the meeting is about —Yes, of course. It will _____some important rules we need to know about our school.

Seeing me, Tom—- one of my old friend, walked across the street ______ to me, saying “Long time no see.”

officials soon realized that, _________,things would get worse